From my years of experience you got what you got, too late to fert.
Try again next year and read all you can here and other sites or buy a good book on outdoor growing.
Too late to pull a rabbit out of the hat.
I know this is an older post but I wanted to comment and vouch for this soil mix for outdoor use.I use subcools soil mix outdoors and it works excellent. I dig a hole thats equal to a 5-7 gal bucket and act as if it was a bucket and follow his directions, sometimes I use a buckets also and paint...